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st: drop observations after first occurence of an event
From
raoul reulen <[email protected]>
To
[email protected]
Subject
st: drop observations after first occurence of an event
Date
Fri, 19 Feb 2010 13:16:34 +0000
Dear All
Apologies for the probably straightforward query, but I cannot get it
done. I want to drop any observations after the first occurrence of an
event (coded as 1) in my dataset. I am not interested in what happens
after the event, so want to drop any subsequent observations whether
they are events or not. See example below. For id nr 1 I want to drop
all observation after the first occurence of the number "1".
id event
1 0
1 0
1 0
1 1
1 0 <--drop
1 0 <--drop
2 0
2 0
2 1
2 1 <--drop
2 0 <--drop
3 0
3 1
3 0 <--drop
3 1 <--drop
Many thanks.
Raoul
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